Dome light



Sept. 23j, 1924.

VV. SCHNELL DOME LIGHT l Filed sept. 1'7. 1923 4 IN VEN TOR. ZZZdZH/LwZZ AITTpRNEY.

. Parental sept. 23,1924.

STATES l 1,509,733 PATENT opinies- WILLIAM SCHNELL, OF DETROIT, MICHIGAN, ASSIGNOR .TO TERNSTEDT MANUFAC- TURING CO., F DETROIT, MICHIGAN; A CORIEORATION OF MICHIGAN.

DOME LIGHT.

Application led September 17, 1923. Serial No. 663,018.

To all whom it may concern:

lBe it known that WILLIAM SCHNELL, a citizen of the United States, residing at De* troit, in the county of Wayne and State ofv o Michigan, has invented certain new and useful Tin rovements in lDome Lights, ofpwhieh the fol owing is a specification. n

This invention relates to'dome lights and has for its object a dome light in which the 1u metal parts are -so designed that they may be .stamped out of a single piece.

Tn the common dome light now used in closed body'construction for automobiles,it vis usual to use three pieces.

to receive the electric light socket and hold the light bulbi The lens is ordinarily car-- red in a lens frame madeof two separate pieces which are ordinarilyl soldered together after the lens has been inserted. This makes a three-piece metal structure vto form the reflector and lens frame.

Tt'is the object of my invention to make:

' 3U Referring to the drawings:

Fig. l is a plan view of the shell, that is,

an elevation of the back of the shell.

Fig/,2 is a cross section taken. on the line 2 2 ofFig. 1. Fig. 3 is a rear elevation of the lens. Fig. 4 `is a side elevation of the lens.

Fig. 5 is a detailed View of aA modified Aform of locking spring.

F ig. 6 isa side elevation of the same mein- K 4Q ber.

A piece of sheet metal is stamped to the shape'shown in Figs. l and. 2, that is, it 1s cupped on its inside to form a reflector or base a of the light', while the edge is turned -over to form the lens frame b. An offset or shoulder c is formed betweenthe'base por-4 tion and the lens frame portion and below this rests the wire spring e. This wire spring has,'at dametrically opposed points, a pair of offset loops d adapted to protrude through the punched out openings f of the lens frame. At points 90 degrees removed from these loops al are provided loops g which protrude down through openings 7L in the s oulder Lc.

There is 'thes 15 cup-like reflector portion which-is adapted The-domey lens is shown in4 Figs. 3 and 4. It is provided with a lens portion and is surmounted by ya ring portion j provided with bayonet recesses it'. The openings of these bayonet recessesvare located at the 1S() degree p'oints on the ring and are` designated e'. There isalso set in fr'oni the edge of the ring portion, a pair of notches lm diametrically opposite but less than 90 degrees removed from the openings z' of the bayonet recesses for a purpose later to be described. These lenses are moulded, but obviously thtl ring portion together with the recesses and the notches may be readily moulded into the lens without much more expense or trouble. The shell is secured to the ceiling of the car. It is provided with an opening n through which the light socket protrudes. The lens may be easily secured to the shell by simply inserting it and causing the openings z'v of the bayonet recesses to registerl .with the oset loops d of the spring. The

lens may then be turned until theV notches m register with the locking loops g whereupon the locking loops will snap into the notches m. These locking loops or springs perform a double function. They `serve-to prevent the turning ofthe lens so that it will again come in position where it can disengage itself from the shell and further to engage against the bottom of the notches and thrust the lens outwardly with respect to the shell so as to prevent vibration and rattling.

In Figs and 6, a slightly different form of spring is shown. This is a flat spring p adapted to rest on the shoulder c of the shell.

It is providedw'ithvturned down lips o whichl are adapted to protrude through the lopenings f in -the lens'frame, and is provided with. spring points i adaptedto protrude through the, openings /L in the shoulder c.

What I claim is: Y.

l. ln a dome light, the' combination of a shell forming the reflector'v and lens frame in a single piece, a spring member. protruding through said shell ,to forni a part of a bayonet loclnand aA lens provided with a bayonet recessin the glass for engaging said spring members.

l, 2. In 'a d ome light, the combination of a stamped metal shell forminga cupped re-l flectorv portion and a turned back fiange or lens frame all ofafsingle piece, a spring member. protrudingtlfifiough Jthe` shell to form part'of a bayonet lachend a lens provided with an integral rearportion having a bayonet recess adapted to interlock with the spring'to form a detachable engagement with the shell.

3. In a dome light, the combination of a stamping forming ina single shell a relector in the form of a cupped member and a lens frame in the form of aturned back flange, a spring member engaging about the back of the shell and provided with protruding portions to pass through the shell, and a lens provided with an integral -ring portion having a bayonet recess for engaging the spring portions to forni a detachableinterlock. A A

4. In a dome light, stamping forming a cup-like reflector and a turned backn flange forming the lens frame, a spring member secured to the back of the shell and having two portions protruding throughthe-shell, one to form part of a the combination of a.

shell provided with a lens frame, a spring ring having locking portions projecting vthrough the lens frame, and a lens of glass Ff provided with an integral glass neck portion having a locking groove formed therein arranged to detachably engage with the projecting portions of the spring ring to detachably lock the lens to` the lens frame.

6. In a dome light, the combination of a shell forming a reflector and lens frame, a bayonet lock member secured in the shell, a second spring catch meinber secured in the shell, and a moulded glass lens provided with a moulded bayonet lock member ai'- ranged to engage with tlie bayonet lock meinber of the shell and provided with a notch arranged to receive the spring catch.

Y. In a dome light, the combination o a shell forming a reflector and lens traine, gi bayonet catch supported on the shell, a second spring catch supported on the shell, and a moulded glass lens provided with :i neck portion having a bayonet slot in its side, and a notch in its end, whereby the two bayonet lock'menibers may be engaged and turned whereupon the spring catch snaps into the notch to lock the members in engagement.

In ltestimony whereof he has allxed his signature.

WILLIAM SCHNELL. 

